It maintains a constant environment for neurons in the CNS and

protects the brain from endogenous or exogenous toxins.

2. It prevents the escape of neurotransmitters from their functional sites in the CNS into the general circulation.

3. Drugs penetrate the blood-brain barrier to varying degrees. For example, nonionized (lipid-soluble) drugs cross more readily than ionized (water-soluble) drugs.

- Inflammation, irradiation, and tumors may destroy the blood-brain barrier and permit entry into the brain of substances that are usually excluded (e.g., antibiotics, radiolabeled markers).

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Anxiety and Depression 101

Anxiety and Depression 101

Everything you ever wanted to know about. We have been discussing depression and anxiety and how different information that is out on the market only seems to target one particular cure for these two common conditions that seem to walk hand in hand.

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